If an aircraft carrier can steam at 29.9 m/s what is it speed in nautical miles (nm) per hour? Assume exact measures of 1 nm = 6080 ft, 1 m = 3.39 ft

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)